﻿(function ($, sr) {
    //当元素大小改变时候触发此方法
    /*用法:--只能选择我window,即是$(window)
        $(window).smartresize(function () {
        // code that takes it easy...
        });
    */
    // debouncing function from John Hann
    // http://unscriptable.com/index.php/2009/03/20/debouncing-javascript-methods/
    var debounce = function (func, threshold, execAsap) {
        var timeout;

        return function debounced() {
            var obj = this, args = arguments;
            function delayed() {
                if (!execAsap)
                    func.apply(obj, args);
                timeout = null;
            };

            if (timeout)
                clearTimeout(timeout);
            else if (execAsap)
                func.apply(obj, args);

            timeout = setTimeout(delayed, threshold || 100);
        };
    }
    // smartresize 
    jQuery.fn[sr] = function (fn) { return fn ? this.bind('resize', debounce(fn)) : this.trigger(sr); };

})(jQuery, 'smartresize');